Gröna Lund: Haunting billboard8

In 2015 Gröna Lund, a theme park in Stockholms,opens a scary attraction. In order to release their new attraction they did this scary street prank in Stockholm. On an outdoor poster they gave people a chance to get a preview of their coming attraction using their mobile phones. But what the people didn’t know was that this was no ordinary ad. In fact, very far from it…